For Current Students

Graduation

Boston College has three graduations each year: May, December, and August. For information on submission of a dissertation, refer to the Graduate School of Arts & Sciences website.

Graduation Deadlines

For those wishing to graduate in either August or December, the deadline for submitting signed and approved copies of theses and dissertations is either August 1 or December 1.

For May graduates, the deadline for submission of signed and approved copies of theses and dissertations is April 1.

Resources

Contact the BCC Graduate Studies Committee at eranthie@bc.edu

Contact the Associate Director of Administration and Graduate Student Services dale.mahoney.1@bc.edu

Registration & Scheduling

Graduate Studies

For information on or assistance with registering for a graduate course, please contact:

Professor Eranthie Weerapana
Chair, Graduate Chemistry Studies
Merkert 214A
(616) 552-2931

Periodic Table
Using WebElements, a periodic table database.

NIST Fundamental Physical Constants
The values of the basic constants and conversion factors of physics and chemistry.

Fundamental Physical Constants / Naturkonstanten

English/German

Exponent (base 10) of decimal numbers: e n = 10^n . Units are separated by spaces, positive numbers denote powers, all units to the right of the slash are in the denominator (negative powers).

Planck constant / Plancksches Wirkungsquantum h
    6.6260755e-34 J s
    h/(2 pi) = 1.05457266e-34 J s

Boltzmann constant / Boltzmannsche Konstante k_B
    
 1.380658e-23 J/K

Elementary charge / Elementarladung e
    1.60217733e-19 C

Avogadro number / Avogadrosche Zahl N_A
    
 6.0221367e23 particles/mol

Speed of light / Lichtgeschwindigkeit c
    2.99792458e8 m/s

Permeability of vacuum / Permeabilität des Vakuums mu_0
    mu_0 = 4 pi e-7 T2 m3/J
    12.566370614e-7 T2 m3/J

Permittivity of vacuum / Dielektrizitätskonstante des Vakuums epsilon_0
    epsilon_0 = 1 / (mu_0 c^2)
    
 8.854187817e-12 C2/J m

Fine structure constant / Feinstrukturkonstante 1 / alpha
    
 137.0359895

Electron rest mass / Elektronenruhemasse m_e
    
 9.1093897e-31 kg

Proton rest mass / Protonenruhemasse m_p
    1.6726231e-27 kg

Neutron rest mass / Neutronenruhemasse m_n
    
 1.6749286e-27 kg

Bohr magneton / Bohrsches Magneton mu_B
    mu_B = eh/(4 pi m_e)
    
 9.2740154e-24 J/T

Nuclear magneton / Kernmagneton mu_N
    mu_N = eh/(4 pi m_p)
    
 5.0507866e-27 J/T

Free electron g factor / g-Faktor des freien Elektrons g_e
    2.002319304386

Free electron gyromagnetic ratio / gyromagnetisches Verhältnis des freien Elektrons gamma_e
    
 gamma_e = 2 pi g_e mu_B / h
    
 1.7608592e11 1/s T
    gamma_e/(2 pi) = 28.024944 GHz/T

Electron magnetic moment / magnetisches Moment des Elektrons mu_e

     mu_e = -(1/2) g_e mu_B
    -9.2847701e-24 J/T

Proton gyromagnetic ratio (H2O) / gyromagnetisches Verhältnis der Protonen in Wasser gamma_p
    2.67515255e8 1/s T
    gamma_p/(2 pi) = 42.576375 MHz/T

Proton magnetic moment / magnetisches Moment des Protons mu_p
    1.41060761e-26 J/T

Proton-electron ratios / Proton-Elektron-Verhältnisse
    m_p/m_e = 1836.152701
    mu_e/mu_p = 658.2106881
    gamma_e/gamma_p = 658.2275841 (protons in water)

Charge-to-mass ratio for electron / Ladungs-Masse-Verhältnis des Elektrons e / m_e
    1.75880e11 C/kg

Atomic mass unit / Einheit der Atommasse amu
    1.66057e-27 kg

Bohr radius / Bohrscher Radius a_0
    5.29177e-11 m

Electron radius / Elektronenradius r_e
    2.81792e-15 m

Gas constant / Gaskonstante R
    
 R = N_A k_B
    8.3143 m2 kg/s2 K mol

Molar volume / Molvolumen V_mol
    
 22.41383 m3/kmol

Faraday constant / Faradaysche Konstante F
     F = N_A e
    
 9.64846e4 C/mol

Proton g factor (Lande factor) / g-Faktor des Protons g_H
    5.585

Gravitational constant / Gravitationskonstante G
    6.6732e-11 m3/kg s2

Acceleration due to gravity / Erdbeschleunigung g
    9.80665 m/s2

Compton wavelength of the electron / Compton-Wellenlänge des Elektrons lambda_c
    lambda_c = h / (m_e c)
    
 2.42631e-12 m

Further Useful Constants / Weitere nützliche Konstanten

Atomic energy unit / atomare Energieeinheit Hartree
    
 1 Hartree = e^2 /(4 pi epsilon_0 a_0)
    
 1 Hartree = 2.625501e+06 J/mol (approx. 627.5 kcal/mol)

Useful Conversion Factors / Nützliche Umrechnungsfaktoren

NMR (Nuclear Magnetic Resonance)

Proton Larmor frequency
    nu_p = gamma_p/(2 pi) B
    
 nu_p = 42.5764 MHz/T (H2O)

EPR (Electron Paramagnetic Resonance, ESR)

Electron Larmor frequency
    nu_e = gamma_e/(2 pi) g/g_e B
    nu_e [GHz] = 13.9962 g B[T]
    g = 0.07144775 nu_e[GHz]/B[T]
    g = 3.04199 nu_e[GHz]/nu_p[MHz]
    B [T] = 0.0234872 nu_p[MHz]
Conversion of Units
    1 G = 0.1 mT
    1 T = 10 kG
    1 mT = 10 G
    A[MHz] = 2.80249 (g/g_e) A[G]
    A[MHz] = 28.0249 (g/g_e) A[mT]
    A[MHz] = 13.9962 g A[mT]
    A[MHz] = 2.99792e4 A[1/cm]
    A[1/cm] = 0.333564e-4 A[MHz]
    A[1/cm] = 4.66863e-4 g A[mT]

Metric Prefixes

Conversions from a multiple or submultiple to the basic units of meters, liters, or grams can be done using the table. For example, to convert from kilometers to meters, multiply by 1,000 (9.26 kilometers equals 9,260 meters) or to convert from meters to kilometers, multiply by 0.001 (9,260 meters equals 9.26 kilometers).

PrefixSymbolLength, weight, or capacityAreaVolume
exaE10^1810^3610^54
petaP10^1510^3010^45
teraT10^1210^2410^36
gigaG10^910^1810^27
megaM10^610^1210^18
hectokilohk10^510^1010^15
myriama10^410^810^12
kilok10^310^610^9
hectoh10^210^410^6
basic unit-1 meter, 1gram, 1 liter1 meter^21 meter^3
decid10-^110-^210-^3
centic10-^210-^410-^6
millim10-^310-^610-^9
decimillidm10-^410-^810-^12
centimillicm10-^510-^1010-^15
microu10-^610-^1210-^18
nanon10-^910-^1810-^27
picop10-^1210-^2410-^36
femtof10-^1510-^3010-^45
attoa10-^1810-^3610-^54

Basic Units

English/German

length / Länge
        meter (British: metre) / Meter: m
mass / Masse
        kilogram / Kilogramm: kg
time / Zeit
        second / Sekunde: s
electric current / elektrische Stromstärke
        ampere / Ampere: A
thermodynamic temperature / thermodynamische Temperatur
        kelvin / Kelvin: K
amount of substance / Substanzmenge
        mole / Mol: mol
luminous intensity / Lichtstärke
        candela / Candela: cd

SI Derived Units / Abgeleitete SI-Einheite

English/German

Frequency / Frequenz
        hertz: Hz = 1/s
Force / Kraft
        newton: N = m kg/s2
Pressure, stress / Druck, mechan. Spannung
        pascal: Pa = N/m2 = kg/m s2
Energy, work, quantity of heat / Energie, Arbeit, Wärmemenge
        joule: J = N m = m2 kg/s2
Power, radiant flux / Leistung
        watt: W = J/s = m2 kg/s3
Quantity of electricity, electric charge / elektrische Ladung
        coulomb: C = s A
Electric potential / elektrische Spannung
        volt: V = W/A = m2 kg/s3 A
Capacitance / Kapazität
        farad: F = C/V = s4 A2/m2 kg
Electric resistance / elektrischer Widerstand
        ohm: Omega = V/A = m2 kg/s3 A2
Conductance / elektr. Leitfähigkeit
        siemens: S = A/V = s3 A2/m2 kg

Magnetic flux / magnetischer Fluß
        weber: Wb = V s = m2 kg/s2 A
Magnetic flux density, magnetic induction / Magnetische Induktion
        tesla: T = Wb/m2 = kg/s2 A
Inductance / Induktivität
        henry: H = Wb/A = m2 kg/s2 A2
Luminous flux / Lichtstrom
        lumen: lm = cd sr
Illuminance / Beleuchtungsstärke
        lux: lx = lm/m2 = cd sr/m2
Activity (ionizing radiations) / Radioaktivität
        becquerel: Bq = 1/s
Absorbed dose / Absorbierte (Strahlen-)Dosis
        gray: Gy = J/kg = m2/s2 
Dynamic viscosity / Dynamische Viskosität
        pascal second: Pa s = kg/m s
Moment of force / Drehmoment
        meter newton: N m = m2 kg/s2
Surface tension / Oberflächenspannung
        newton per meter: N/m = kg/s2
Heat flux density, irradiance / Wärmeflußdichte
       watt per square meter: W/m2 = kg/s3
Heat capacity, entropy / Wärmekapazität, Entropie
        joule per kelvin: J/K = m2 kg/s2 K
Specific heat capacity, specific entropy / Spezifische Wärmekapazität, spezifische Entropie
        joule per kilogram kelvin: J/kg K = m2/s2 K

Specific energy / Spezifische Energie
        joule per kilogram: J/kg = m2/s2
Thermal conductivity / Thermische Leitfähigkeit
        watt per meter kelvin: W/m K = m kg/s3 K
Energy density / Energiedichte
        joule per cubic meter: J/m3 = kg/m s2
Electric field strength / Elektrische Feldstärke
        volt per meter: V/m = m kg/s3 A
Electric charge density / Elektrische Ladungsdichte
        coulomb per cubic meter: C/m3 = s A/m3
Electric displacement, electric flux density / Elektrische Flußdichte
        coulomb per square meter: C/m2 = s A/m2

Permittivity / Influenz
        farad per meter: F/m = s4 A2/m3 kg
Permeability / Permeabilität
        henry per meter: H/m = m kg/s2 A2
Molar energy / Molare Energie
        joule per mole: J/mol = m2 kg/s2 mol
Molar entropy, molar heat capacity / Molare Entropie, molare Wärmekapazität
        joule per mole kelvin: J/mol K = m2 kg/s2 K mol
Exposure (ionizing radiations) / Exposition
        coulomb per kilogram: C/kg = s A/kg
Absorbed dose rate / Absorbierte Dosisrate
        gray per second: Gy/s = m2/s3

 

cgs Units / cgs-Einheiten

erg
        1 erg = E-7 J
dyne
        1 dyn = E-5 N
poise
        1 P = 1 dyn s/cm2 = 0.1 Pa s
stokes
        1 St = 1 cm2/s = E-4 m2/s
gauss
        1 G = E-4 T
oersted
        1 Oe = (1000/(4 pi)) A/m
maxwell
        1 Mx = E-8 Wb
stilb
        1 sb = 1 cd/cm2 = E4 cd/m2
phot
        1 ph = E4 lx

 

Common Equivalent Weights and Measures

UnitsMetric EquivalentU.S. Measures
acre0.404 685 64 hectares43,560 feet^2
acre4,046.8564 meters^24,840 yards^2
acre0.004 046 856 4 kilometers^20.001 562 5 miles^2, statute
are100 meters^2119.599 yards^2
barrel, (petroleum, US)158.987 29 liters42 gallons
barrel, (proof spirits, US)151.416 47 liters40 gallons
barrel, (beer, US)117.347 77 liters31 gallons
bushel35.239 07 liters4 pecks
cable219.456 meters120 fathoms
chain (surveyor's)20.116 8 meters66 feet
cord (wood)3.624 556 meters^3128 feet^3
cup0.236 588 2 liters8 ounces, liquid (US)
degrees, Celsius(water boils at 100 degrees C, freezes at 0 degrees C)multiply by 1.8 and add 32 to obtain degrees F
degrees, Fahrenheitsubtract 32 and divide by 1.8 to obtain degrees Cwater boils at 212 degrees F, freezes at 32 degrees F
dram, avdp.1.771 845 2 grams0.0625 5 ounces, avdp.
dram, troy3.887 934 6 grams0.125 ounces, troy
dram, liquid (US)3.696 69 milliliters0.125 ounces, liquid
fathom1.828 8 meters6 feet
foot30.48 centimeters12 inches
foot0.304 8 meters0.333 333 3 yards
foot0.000 304 8 kilometers0.000 189 39 miles, statute
foot^2929.030 4 centimeters^2144 inches^2
foot^20.092 903 04 meters^20.111 111 1 yards^2
foot^328.316 846 592 liters7.480 519 gallons
foot^30.028 316 847 meters^31,728 inches^3
furlong201.168 meters220 yards
gallon, liquid (US)3.785 411 784 liters4 quarts, liquid
gill (US)118.294 118 milliliters4 ounces, liquid
grain64.798 91 milligrams0.002 285 71 ounces, advp.
gram1,000 milligrams0.035 273 96 ounces, advp.
hand (height of horse)10.16 centimeters4 inches
hectare10,000 meters^22.471 053 8 acres
hundredweight, long50.802 345 kilograms112 pounds, avdp.
hundredweight, short45.359 237 kilograms100 pounds, avdp.
inch2.54 centimeters0.083 333 33 feet
inch^26.451 6 centimeters^20.006 944 44 feet^2
inch^316.387 064 centimeters^30.000 578 7 feet^3
inch^316.387 064 milliliters0.029 761 6 pints, dry
inch^316.387 064 milliliters0.034 632 0 pints, liquid
kilogram0.001 tons, metric2.204 623 pounds, avdp.
kilometer1,000 meters0.621 371 19 miles, statute
kilometer^2100 hectares247.105 38 acres
kilometer^21,000,000 meters^20.386 102 16 miles^2, statute
knot (1 nautical mi/hr)1.852 kilometers/hour1.151 statute miles/hour
league, nautical5.559 552 kilometers3 miles, nautical
league, statute4.828.032 kilometers3 miles, statute
link (surveyor's)20.116 8 centimeters7.92 inches
liter0.001 meters^361.023 74 inches^3
liter0.1 dekaliter0.908 083 quarts, dry
liter1,000 milliliters1.056 688 quarts, liquid
meter100 centimeters1.093 613 yards
meter^210,000 centimeters^21.195 990 yards^2
meter^31,000 liters1.307 951 yards^3
micron0.000 001 meter0.000 039 4 inches
mil0.025 4 millimeters0.001 inch
mile, nautical1.852 kilometers1.150 779 4 miles, statute
mile^2, nautical3.429 904 kilometers^21.325 miles^2, statute
mile, statute1.609 344 kilometers5,280 feet or 8 furlongs
mile^2, statute258.998 811 hectares640 acres or 1 section
mile^2, statute2.589 988 11 kilometers^20.755 miles^2, nautical
minim (US)0.061 611 52 milliliters0.002 083 33 ounces, liquid or one-sixtieth of a dram
ounce, avdp.28.349 523 125 grams437.5 grains
ounce, liquid (US)29.573 53 milliliters0.062 5 pints, liquid
ounce, troy31.103 476 8 grams480 grains
pace76.2 centimeters30 inches
peck8.809 767 5 liters8 quarts, dry
pennyweight1.555 173 84 grams24 grains
pint, dry (US)0.550 610 47 liters.5 quarts, dry
pint, liquid (US)0.473 176 473 liters0.5 quarts, liquid
point (typographical)0.351 459 8 millimeters0.013 837 inches
pound, avdp453.592 37 grams16 ounces, avdp
pound, troy373.241 721 6 grams12 ounces, troy
quart, dry (US)1.101 221 liters2 pints, dry
quart, liquid (US)0.946 352 946 liters2 pints, liquid
quintal100 kilograms220.462 26 pounds, avdp.
rod5.029 2 meters5.5 yards
scruple1.295 978 2 grams20 grains
section (US)2.589 988 1 kilometers^21 mile^2, statute or 640 acres
span22.86 centimeters9 inches
stere1 meter^31.307 95 yards^3
tablespoon14.786 76 milliliters3 teaspoons
teaspoon4.928 922 milliliters0.333 333 tablespoons
ton, long or deadweight1,016.046 909 kilograms2,240 pounds, avdp.
ton, metric1,000 kilograms2,204.623 pounds, avdp.
ton, metric1,000 kilograms32,150.75 ounces, troy
ton, register2.831 684 7 meters^3100 feet^3
ton, short907.184 74 kilograms2,000 pounds, avdp.
township (US)93.239 572 kilometers^236 miles^2, statute
yard0.914 4 meters3 feet
yard^20.836 127 36 meters^29 feet^2
yard^30.764 554 86 meters^327 feet^3
yard^3764.554 857 984 liters201.974 gallons